It all has to do with how a Constitutional form of government is established. Our forefathers (and foremothers!) got together and DECIDED that the Constitution would BE the law of the land. Of course, I'm translating your "fucking word of God" to the more correct "law of the land".
If you stayed in school, you would know this. Oh. Wait. With the schools these days spending more time trying to make you "feel good" than "be smart", it's no wonder you come across as an idiot.
I would definitely recommend that you READ the US Constitution. It is a very interesting document. You will find that they spend a great deal of time word smithing the original Constitution and the first 10 amendments. After that, it gets more and more into legal jargon. Too bad.
If you still have a hard time understanding what they MEANT, I would have to suggest you do a bit of reading on the subject. This might surprise you to learn, but the folks that were around during the writing and ratification of the Constitution actually spent a great deal of time TALKING about what was meant and what wasn't meant. This was mostly through articles published in news papers (no TV, no radio, no internet!!!), so much of that actually survives and has been published in book form so we can go back and actually understand these folks thoughts.
Of course, this all assumes you CAN read...